Dell Precision M70 screw size
M2 / M2.5 / M3 · 3 to 8 mm long
If you are replacing a screw on Dell Precision M70, the thread is M2, M2.5 and M3 in lengths from 3 to 8 mm.
There are 14 separate fitment records for it, including card reader (qty 4) (M2), display (qty 8) (M2) and display bezel (qty 8) (M2), plus 11 more in the table below.
Head and drive, as the sources state them: Phillips drive.
14 of the 14 records are marked confirmed, drawn from 1 source (dl.dell.com).
M2 means a 2 mm nominal diameter with a 0.4 mm thread pitch. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable.
Dell Precision M70 screw specifications
One row per fitment record. Head, drive are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Where it goes | Status |
|---|---|---|---|---|---|---|
| M2 | 3 mm | 0.4 mm | not stated | not stated | Card reader (qty 4) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Display (qty 8) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | Display bezel (qty 8) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | not stated | System board (qty 1) | Confirmed |
| M2 | 3 mm | 0.4 mm | not stated | Phillips | Wireless card (qty 1, Phillips) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Display bezel (qty 6) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Fan (qty 1) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Keyboard (qty 2) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Palm rest (qty 4) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | Speaker (qty 1) | Confirmed |
| M2.5 | 5 mm | 0.45 mm | not stated | not stated | System board (qty 3) | Confirmed |
| M2.5 | 8 mm | 0.45 mm | not stated | not stated | Display (qty 2) | Confirmed |
| M2.5 | 8 mm | 0.45 mm | not stated | not stated | Palm rest (qty 13) | Confirmed |
| M3 | 3 mm | 0.5 mm | not stated | Phillips | Hard drive (qty 2, Phillips) | Confirmed |
Fitment records and sources
Card reader (qty 4)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display (qty 8)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display bezel (qty 8)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
System board (qty 1)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Wireless card (qty 1, Phillips)
pitch 0.4 mm · tap 1.6 mm · clearance 2.4 mm · PH0 / Torx T6
Display bezel (qty 6)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Fan (qty 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Keyboard (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 4)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Speaker (qty 1)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
System board (qty 3)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Display (qty 2)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Palm rest (qty 13)
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
Hard drive (qty 2, Phillips)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Laptop covers and brackets often mix two or three lengths of the same thread, so lay the screws out in the order they came out (a magnetic mat or a sheet of paper with the hole pattern drawn on it works).
- Diameter: across the threads an M2 screw measures about 2 mm with calipers (usually a hair under). This device also uses M2.5 / M3, so measure each screw rather than assuming they match.
- Pitch: 0.4 mm from one thread crest to the next (25 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The records span 3–8 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source names a Phillips drive. For comparison, standard M2 heads take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
- Tightening: no device-specific torque is published in these records. The site's general figure for M2 is about 25-40 N·cm into metal threads and 12-20 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2 / M2.5 / M3
- The standard M.2 SSD screw is M2 x 3mm, but some laptops and handhelds use non-standard lengths or head shapes.
- Dell/HP/Lenovo manuals often list screws only by torque or head shape, so community teardowns are needed for diameter.
- Thorlabs' 16mm cage system standard plates use dual 4-40 (UNC) and M3 taps on the same plate (e.g., SP01), so metric and imperial fasteners are both valid depending on the region/kit purchased.
Buy these screws at TechSpare Warehouse
In stock and shipped from South Carolina. Our black screws are Phillips wafer head (low profile); match the head style and length to the original before you order.
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More in Laptops & PCs
The same screw also fits
Devices whose records share a thread with Dell Precision M70, closest length match first.
- Lenovo ThinkPad T400 also M2 × 3 mm
- Dell Latitude 3380 also M2 × 3 mm
- Lenovo ideapad 310 also M2 × 3 mm
- Dell XPS 15 7590 also M2 × 3 mm
- HP Chromebook x360 14 inch also M2 × 3 mm
- Dell Latitude 5289 also M2 × 3 mm
- Lenovo ThinkPad T15 Gen 1 also M2 × 3 mm
- Lenovo IdeaPad U530 Touch also M2.5 × 5 mm
Questions about Dell Precision M70 screws
- What size screw does Dell Precision M70 use?
- M2 × 3 mm for card reader (qty 4); M2 × 3 mm for display (qty 8); M2 × 3 mm for display bezel (qty 8); M2 × 3 mm for system board (qty 1); M2 × 3 mm for wireless card (qty 1, Phillips); M2.5 × 5 mm for display bezel (qty 6); M2.5 × 5 mm for fan (qty 1); M2.5 × 5 mm for keyboard (qty 2); M2.5 × 5 mm for palm rest (qty 4); M2.5 × 5 mm for speaker (qty 1); M2.5 × 5 mm for system board (qty 3); M2.5 × 8 mm for display (qty 2); M2.5 × 8 mm for palm rest (qty 13); M3 × 3 mm for hard drive (qty 2, Phillips).
- How long are the screws in Dell Precision M70?
- The records range from 3 to 8 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M2 screw?
- 0.4 mm (coarse), which is the standard pitch for M2 machine screws; a 0.25 mm fine pitch exists but is uncommon. The tap drill is 1.6 mm and the normal clearance hole is 2.4 mm.
- What screwdriver do I need for Dell Precision M70?
- The source lists a Phillips drive. Standard M2 heads otherwise take PH0 (Phillips) or T6 (Torx), or a 1.5 mm hex key.
- Can I use an imperial screw instead of M2?
- No. Imperial look-alike: #2-56 UNC (2.18 mm) is close but not interchangeable. Use a true M2 screw so it does not cross-thread or strip the hole.
- Where can I buy replacement screws for Dell Precision M70?
- TechSpareWarehouse (our own store) lists M2 x 3mm, M2.5 x 5mm and M2.5 x 8mm, which match lengths in the records above.